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Contents of one box in the National Slag Collection

Outcrop of sideritic ore overhanging sandstone

Crafts

Part of an early blast furnace (Araglin, Ireland)

Highly vesicular bloomery slag

Etched sample of unworked bloomery iron (photomicrograph)

Comparing excavated sites

Open cast iron ore mining, Romano-British

Experimental Archaeology

Documentary record search

More comparative studies

Conferences

Recording artefacts in situ

Artefactual evidence

Experimental reconstruction

Just digging

Activity frequency mapping (iron works)